I have CFS- I react to a lot of supplements that either boost my immunodeficient state or detoxify the body. My experience with this product is that I felt very unwell after taking only 1/8 of a capsule! Hard to believe..but true. I stopped after the first dose. I have since read that other people with my syndrome had to go very very slowly with this supplement. I may try again with a dose that is 1/20th!! For normal healthy people, I guess this tells you that this stuff actually does increase immunity- just for my overloaded body ( pathogens, virus, fungi...) , it was too much

This one is fantastic, I've got the best health improovement ever of using any product. I am ful of energy and can do things and solve problems as many for one day, as usually did for few weeks.
The best price and service!

I had a fungal infection in the area of the groin, after taking Transfer factor, this fungus became greatly diminished - a fungal infection is a sign of a weakened immune system and transfer factor is an immune builder - it worked for me!